Home / 10,781.29-16,172.62-3,386.04

Finding the Fourth Proportional to 10,781.29, 16,172.62 and 3,386.04

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Solution

The fourth proportional to 10,781.29, 16,172.62 and 3,386.04 is: 5,079.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.29 : 16,172.62 = 3,386.04 : x
  2. Step 2: Convert to fraction form
    10,781.29/16,172.62 = 3,386.04/x
  3. Step 3: Cross multiply
    10,781.29x = 16,172.62 × 3,386.04
  4. Step 4: Simplify right side
    10,781.29x = 54,761,099.44
  5. Step 5: Solve for x
    x = 54,761,099.44/10,781.29
  6. Step 6: Final answer
    x = 5,079.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.